Photodegradation performance of methylene blue aqueous solution on Ag/g-C3N4 catalyst

The graphitic carbon nitride (g-C 3 N 4 ) was synthesized by the polymerization of dicyandiamide, then silver hybrid g-C 3 N 4 (Ag/g-C 3 N 4 ) catalyst was prepared by photodeposition, deposition-precipitation, and doping methods. The first two methods deposited silver nanoparticles on the surface o...

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Bibliographic Details
Published in:Rare metals 2011-03, Vol.30 (Suppl 1), p.276-279
Main Authors: Meng, Yali, Shen, Ju, Chen, Dan, Xin, Gang
Format: Article
Language:English
Subjects:
Biomaterials
Chemistry and Materials Science
Energy
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Physical Chemistry
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Summary:The graphitic carbon nitride (g-C 3 N 4 ) was synthesized by the polymerization of dicyandiamide, then silver hybrid g-C 3 N 4 (Ag/g-C 3 N 4 ) catalyst was prepared by photodeposition, deposition-precipitation, and doping methods. The first two methods deposited silver nanoparticles on the surface of g-C 3 N 4 semiconductor, while the last one embedded silver atom into the g-C 3 N 4 matrix without destroying the host structure. The photodegradation behavior of methylene blue (MB) aqueous solution over Ag/g-C 3 N 4 catalyst was performed to evaluate the photocatalytic activity of the as-prepared samples. The samples were characterized by XRD, UV-vis spectroscopy, FT-IR spectroscopy, elemental analysis and TEM. The experiment results indicate that the Ag/g-C 3 N 4 prepared by the doping method possesses the best photocatalytic activity, which can be explained by promoting the transfer of electron due to the formation of organic-metal hybrid material.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-011-0284-7